<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        let a = prompt('请输入一个数字')
        function getTime(t = 0) {
            // 计算公式
            let h = parseInt(t / 60 / 60 % 24)
            let m = parseInt(t / 60 % 60)
            let s = parseInt(t % 60)
            h = h < 10 ? '0' + h : h
            m = m < 10 ? '0' + m : m
            s = s < 10 ? '0' + s : s
            document.write(`转换之后的时间是${h}小时${m}分钟${s}秒`)
        }
        getTime(a)
    </script>
</body>

</html>